Hello all. Yeah I sprayed 3/4 of a can of SeaFoam into the intake manifold, using the vacuum line from the brake booster. Now, the thing runs rougher at idle, and stumbles sometimes when cold, when throttle is applied below 2000rpm. Has lousy/uneven power below 2000rpms too. Especially before the engine warms up completely. Any ideas? Been that way for a couple weeks now. How could squirting SeaFoam make things worse?

Hello all. Yeah I sprayed 3/4 of a can of SeaFoam into the intake manifold, using the vacuum line from the brake booster. Now, the thing runs rougher at idle, and stumbles sometimes when cold, when throttle is applied below 2000rpm. Has lousy/uneven power below 2000rpms too. Especially before the engine warms up completely. Any ideas? Been that way for a couple weeks now. How could squirting SeaFoam make things worse?

First off, ya didnt read the instructions very well on the can, you listened to some knuckleheads lack of detailed comment in doing such a thing. You are supposed to only use a 1/3 of the can.

Anyway.. Go to the auto store, go get yourself some new plugs and dont do it like that again....